CVE-2026-21751Network attack vector

Credential leakage and unauthorized lateral compromise

Published Aug 24, 2026 · Updated Aug 24, 2026

Cryptographic weakness in HCL Hive 1.0 allows remote attackers to leak credentials or move laterally after an internal component breach. HCL has not published the affected cryptographic primitive, its code locus, or the risky operation performed on untrusted data. Exploitation requires compromise of one internal component and can expose credentials broadly or enable unauthorized access to peer components.

CVSS severity7.4
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cryptographic weakness in HCL Hive 1.0 allows remote attackers to leak credentials or move laterally after an internal component breach. HCL has not published the affected cryptographic primitive, its code locus, or the risky operation performed on untrusted data. Exploitation requires compromise of one internal component and can expose credentials broadly or enable unauthorized access to peer components.

The record

CVE
CVE-2026-21751
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
HCLSoftware
Product
HCL Hive
Classifications
CWE-1240, CAPEC-97
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HCLSoftware · HCL Hiveversion=1.0

Published CVSS scores

7.4HCLSoftwareCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1240Use of a Cryptographic Primitive with a Risky Implementation
CAPEC-97Cryptanalysis

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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